Active suspension system

Details Active suspension system Active suspension system

1991-11-27

1992-12-29

Rice, Kenneth R.

Land vehicles

Wheeled

Running gear

180 41, 36442405, B60G 1700

Patent

active

051745984

ABSTRACT:
An active suspension system for an automotive vehicle is arranged to regulate the attitude of a vehicle body in a flat or balanced state by controlling hydraulic cylinders respectively disposed between a vehicle body and a road wheel, in response to an attitude change of the vehicle body. The active suspension system comprises electromagnetically operated variable vibration attenuation valves, each of which is fluidly connected with each hydraulic cylinder and is followed by an accumulator. Each variable vibration attenuation valve is adapted to be variable in its attenuation constant in response to a vertical acceleration experienced by the road wheel. The variable vibration attenuation valve takes on a low attenuation constant to maintain a high riding quality of the vehicle under a normal cruising condition, and a high attenuation constant to suppress the response of the road wheel under a rough road cruising condition.

REFERENCES:
patent: 4154461 (1979-05-01), Schnittger
patent: 4905152 (1990-02-01), Kawabata
patent: 4907154 (1990-03-01), Yasuda et al.
patent: 4954957 (1990-09-01), Kawagoe et al.
patent: 5013067 (1991-05-01), Mine et al.

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